FM+ 558-24 PRO System | 24 Receivers

NOTE: The FCC requires this device to be used with approved, FCC 15.203 compliant antennas and be professionally installed. Refer to Williams AV’s Antenna Selection Install Guide for compliant antennas for this product.

The FM + connects to the installation location’s Wi-Fi Network. It does not provide a network on its own. The Wi-Fi network will need to be installed and established before the FM + can be used.

Dimensions	8.45″ W x 8.25″ D x 1.72″H (21.5 cm x 21 cm x 4.4 cm)
Weight	Transmitter: 3.2 lbs (1.45 kg)
Color	Black/Silver with silver legends on the front, white legends on the back
Rack Mount	Standard 19” Rack, one EIA rack space high, 1/2 space wide 1–2 units can be mounted in a single rack space with optional RPK 005 (single) or RPK 006 (double) Rack Mount Kits
Power Supply	Desktop Style Transformer (TFP 062); Input: 100-240 VAC, 50/60 Hz. IEC Line Cord; Output: 24 VDC, 750 mA, 18W. 2.5mm ID center positive barrel connector
Power ON Indicator	Push On/Push Off latching power button, backlit green indicates power ON, backlight off indicates power OFF, fading from bright to dark indicates Sleep Mode.
Temperature Range	Operating: +32° F to +122° F (0° C to 50° C); Storage: -4° F to +158° F (-20° C to 70° C)
User Interface	3.12” High Resolution OLED display with selections via buttons. Hosted Web page. Remote control and monitoring.
Dante	Only available on FM T55 D
Ethernet	RJ-45 on back of unit supports CAT 5e cable lengths up to 328 feet (100 meters); 10/100 Base-T IEEE 802.3 compliant, unique MAC address
RF Section
Operating Frequencies	72.1-75.9 MHz , 17 wideband channels (selectable)
Frequency Accuracy	± 2 ppm stability, 0-50˚ C
Deviation	± 75 kHz maximum
Pre-Emphasis	75 microsec
RF Field Strength	Does not exceed 80 mV/m at 3 m
Compatible Antennas	ANT 005, ANT 021, ANT 024, or ANT 025 Refer to Williams AV’s Antenna Selection Install Guide for FCC-compliant antennas for this product.
Transmission Range	Up to 1000 ft (304 m) with ANT 005 coaxial antenna mounted on rear chassis connector
RF Outputs	(1x) #10-32 stud connector in center of unit (pcb mounted) (1x) F-connector on rear chassis
RF Transmit Indicator	1 Green LED On Air Indicator
RF Power	Full, Medium, Low or OFF indiacted by menu icon.
RF Time Out (sleep mode)	30 min. duration, 4 hr. duration, or Always On selected via menu. Starts when audio is below -18 dB level with no button pressed for selected duration.
Audio Section
Audio Processor Functions	DSP based; Compression: 1:1, 1.5:1 or 2:1; High-pass and Low-pass Filter Frequency control
Frequency Response	31-16000 Hz, ±3 dB (re: 1 kHz, ±3 dB) (“Music” Audio Preset)
Signal-to-Noise Ratio	67 dB (typical) Transmited RF
Total Harmonic Distortion	Less than 0.25% @ 1 kHz (RF output)
Common Mode Rejection	Greater than 57 dB @ 1 kHz, Mic or Line
Audio Inputs	(1x) Combination 3-pin XLR, 1/4″ (TRS) jack for balanced or unbalanced line level, or balanced or unbalanced microphone with selectable phantom power
Audio Input Gain Adjust	In menu, adjustable to 0 to -50 dB, in 1dB steps
Phantom Power	14.4 VDC applied through 2.2 kOhms resistors to analog combo jack: Pin 2 and Pin 3 on XLR jack, or tip and ring on 1/4″ TRS jack
Audio Level Indicators	10-LED array that reads -18 to +9 dB at 3 dB intervals. 7 Green, 2 Amber, and 1 red LED. Green LEDs indicate normal operating audio level peaks, Amber LEDS indicate close to overload peaks, Red LED indicates overload peaks
Headphone Output	1/4″ TRS stereo jack, mono signal, 14.85 mW at +9dB, maximum in 33 Ω (level adjustable in menu 0 to -40 dB in 2 dB steps)
Line Output	RCA jack (black), -10 dBV (.32 VRMS); Output impedance 100 ohms at +9dB
Input Levels (Bal or Unbal) (at Audio Input Gain = 0dB)	Nominal (1st Amber + 3dB LED) Overload Warning (Displayed on Screen) Absolute Max. Rating*
Microphone	-55 dBV (1.7 mV RMS) -22 dBV (80 mV RMS) +20 dBV (10.0 V RMS)
Line	-25 dBV (55 mV RMS) +16 dBV (6.3 V RMS) +20 dBV (10.0 V RMS)
Approvals	FCC, RoHS3, WEEE, Industry Canada
Warranty	2-year parts and labor

NOTE: Specifications are subject to change without notice.
* Stresses above these ratings may cause permanent damage or degrade reliability.

Use with	PPA T45, PPA T55, PPA T55C, PPA T27 Transmitters
Connector type	F-connector
Cable type	RG 59 coax
Nominal Impedance	75 Ohm
Total Cable Length	22 ft
Active Antenna Length	80 in

 

• The CHG 3512 shall be a 12-unit, drop-in battery charger and shall charge a maximum of 24 AA size NiMH batteries while they are installed into the Williams Sound PPA R37, PPA R35-8, R36, R863, RX22-4 style 3V receivers, or PPA T36, PPA T46, PFM T36, T863 style 3V transmitters.
• The charger CHG 3512 shall be microprocessor controlled and enclosed in ABS plastic, measuring 9.5" L x 7.4" W x 1.7" H (24.1cm L x 18.8cm W x 4.3cm H). The CHG 3512 unit shall weigh 1.2 lbs (2.64 Kg) without power supply, 2.48lbs (1.1 Kg) shipping weight. In the optional carry case, the charger shall weigh 10 lbs. (4.53 kg).
• The charger shall be a timed charger at 16 hours, and will provide a maintain charge once the timer has completed its charging cycle. Each bay on the charger shall have a red LED indicating charging status. The LEDs shall be on constantly during charging and will blink indicating when batteries are fully charged.
• The charger CHG 3512 shall be powered by an external switching power supply (90-240 VAC input; 5 VDC, 4A output) via a CD barrel connector.
• The charger shall have CE approval, and be compliant with RoHS and WEEE regulations.
• The charger shall be the Williams Sound model CHG 3512.

Size:	9.5"L x 7.4"W x 1.7"H (24.1 cm L x 18.8 cm W x 4.3 cm H)
Weight:	1.2 lbs (.54 kg), excluding power supply
Color:	Black ABS
Power Supply Input:	90 - 240 VAC input
Power Supply:	TFP 037 Switching AC adapter, 5 VDC - 4A output
Charging Rate:	16 Hour Charge: 140 mA Pulse/Maintain: 140 mA
Charging Time:	16 hours nominal
Unit Capacity:	12 Units
Indicators:	Individual Charging Indicators: Red LEDs. LEDs blink when batteries are charged
Warranty:	1 year (cables and power supply warrantied for 90 days)
Approvals:	CE, WEEE, RoHS

 

Style	Around-ear speaker
Plug	3.5mm mono
Cord	39"
Driver Size	23 mm
Nominal Impedance	32Ω
Freq. Response	20 - 20kHz
Weight	15g
Max Power Input	30 mW
Sensitivity	118 dB @ 1kHz

  10-3/8" (L) x 6-¼" (W) x 1/8" (H)  

Color:	Black
Weight:	1.5 oz
Length:	18.5” cord
Connector:	NKL 001: 3.5 mm mono plug NKL 001-S: 3.5 mm stereo plug with ring disconnected
Impedance:	8-16 Ohms
Input Power:	500 mW max
Magnetic Field Strength:	25 mW input at 1000 Hz produces 1.7 A/m 6” above the center of loop 85μW input produces 0.1 A/m (IEC Standard)
Approvals:	RoHS, WEEE
Warranty:	One Year

The receiver shall be encased in black, PC/ABS impact-resistant plastic with a hinged battery door. The receiver shall be a body-pack style and include a detachable belt clip for hands-free operation. The receiver shall have a 3.5mm stereo jack to accommodate stereo or mono low-impedance earphones, headphones and neckloops. The receiver shall have a power button that is backlit, indicating power is on. The receiver shall receive 17 preset wideband channels between 72-76MHz. Channel selection shall be made in the menu. The receiver shall have channel-lock capability. The receiver shall have a slide switch inside the battery compartment to select disposable Alkaline or NiMH rechargeable battery operation. It shall have charger contacts on the bottom of the receiver for use with Williams Sound drop-in chargers CHG 3512 and CHG 3502. The receiver shall operate up to 50 hours with two disposable AA Alkaline batteries (BAT 001-2) and up to 32 hours with two AA NiMH rechargeable batteries (BAT 026-2). The receiver shall provide a maximum output of 35mW at 16Ω with an earbud-type earphone. The system's audio frequency response shall be 200Hz to 15kHz ± 3dB, and the signal-to-noise ratio shall be 65dB min. The receiver sensitivity shall be 2µV or better at 12dB Sinad with squelch defeated. The receiver shall accept up to ±75kHz FM deviation and have a 75 µS de-emphasis time constant. The receiver shall have FCC, Industry Canada approvals and be compliant with RoHS and WEEE regulations. The receiver shall be covered by a Lifetime PLUS Limited Warranty, 90 Days on most accessories. This receiver model shall be the Williams Sound model PPA R38N.

Dimensions:	4.1" x 2.85" x 1.38" (104 x 72 x 35mm)
Weight:	4.6oz (130g) with batteries. 2.6oz (73g) without batteries
Color:	Black/Silver. Black ABS Plastic case with Aluminum faceplate.
Battery Type:	(2) AA Alkaline or (2) AA NiMH Rechargeable
Battery Life:	(2) AA non-rechargeable alkaline batteries (BAT 001-2), approx. 50 hrs.
	(2) AA rechargeable NiMH batteries (BAT 026-2), 1500mAh, approx. 32 hrs.
Current Consumption:	52mA nominal
Operating Temp. Range:	32° – 122°F (0° to 50°C)
Channels:	17 Wideband, accessed via menu
Operating Frequencies:	72.1, 72.2, 72.3, 72.4, 72.5, 72.6, 72.7, 72.8, 72.9, 74.7, 75.3, 75.4, 75.5, 75.6, 75.7, 75.8, 75.9 MHz*
FM Deviation:	75 kHz
De-Emphasis:	75 µS
Display Screen:	1" OLED
Power Indication:	Power button, backlit green. Good battery strength - glows solid. Low battery - flashes.
Sensitivity:	2 µV at 12 dB Sinad with squelch defeated
Input Overload:	100 mV
Frequency Response:	200 Hz – 15 kHz, ±3dB
Modulation:	FM, +/- 75 kHz peak deviation
Signal-to-Noise Ratio:	Minimum 65 dB @ 1.0V
Receive Antenna:	Integral with earphone/headphone cord
Audio Output:	35 mW max at 16 Ω
Headphone Connector:	3.5 mm stereo jack, mono output for stereo or mono earphones/headphones
Supplied Earphone:	Stereo,earbud-type with foam cushion, 3.5 mm plug, 32 Ω
Power Save Mode:	Enters sleep mode after approximately 3 minutes of no RF signal
Approvals:	FCC, Industry Canada, RoHS, WEEE
Warranty:	Lifetime PLUS Limited Warranty, 90 Days on most accessories.

 

2 Years